Theorem asclfval 19796

Description: Function value of the algebraic scalars function. (Contributed by Mario Carneiro, 8-Mar-2015.)

Hypotheses

Ref	Expression
asclfval.a	⊢ 𝐴 = (algSc‘𝑊)
asclfval.f	⊢ 𝐹 = (Scalar‘𝑊)
asclfval.k	⊢ 𝐾 = (Base‘𝐹)
asclfval.s	⊢ · = ( ·𝑠 ‘𝑊)
asclfval.o	⊢ 1 = (1r‘𝑊)

Assertion

Ref	Expression
asclfval	⊢ 𝐴 = (𝑥 ∈ 𝐾 ↦ (𝑥 · 1 ))

Distinct variable groups:   𝑥,𝐾   𝑥, 1   𝑥, ·   𝑥,𝑊

Allowed substitution hints:   𝐴(𝑥)   𝐹(𝑥)

Proof of Theorem asclfval

Dummy variable 𝑤 is distinct from all other variables.

Step	Hyp	Ref	Expression
1		asclfval.a	. 2 ⊢ 𝐴 = (algSc‘𝑊)
2		fveq2 6538	. . . . . . . 8 ⊢ (𝑤 = 𝑊 → (Scalar‘𝑤) = (Scalar‘𝑊))
3		asclfval.f	. . . . . . . 8 ⊢ 𝐹 = (Scalar‘𝑊)
4	2, 3	syl6eqr 2849	. . . . . . 7 ⊢ (𝑤 = 𝑊 → (Scalar‘𝑤) = 𝐹)
5	4	fveq2d 6542	. . . . . 6 ⊢ (𝑤 = 𝑊 → (Base‘(Scalar‘𝑤)) = (Base‘𝐹))
6		asclfval.k	. . . . . 6 ⊢ 𝐾 = (Base‘𝐹)
7	5, 6	syl6eqr 2849	. . . . 5 ⊢ (𝑤 = 𝑊 → (Base‘(Scalar‘𝑤)) = 𝐾)
8		fveq2 6538	. . . . . . 7 ⊢ (𝑤 = 𝑊 → ( ·𝑠 ‘𝑤) = ( ·𝑠 ‘𝑊))
9		asclfval.s	. . . . . . 7 ⊢ · = ( ·𝑠 ‘𝑊)
10	8, 9	syl6eqr 2849	. . . . . 6 ⊢ (𝑤 = 𝑊 → ( ·𝑠 ‘𝑤) = · )
11		eqidd 2796	. . . . . 6 ⊢ (𝑤 = 𝑊 → 𝑥 = 𝑥)
12		fveq2 6538	. . . . . . 7 ⊢ (𝑤 = 𝑊 → (1r‘𝑤) = (1r‘𝑊))
13		asclfval.o	. . . . . . 7 ⊢ 1 = (1r‘𝑊)
14	12, 13	syl6eqr 2849	. . . . . 6 ⊢ (𝑤 = 𝑊 → (1r‘𝑤) = 1 )
15	10, 11, 14	oveq123d 7037	. . . . 5 ⊢ (𝑤 = 𝑊 → (𝑥( ·𝑠 ‘𝑤)(1r‘𝑤)) = (𝑥 · 1 ))
16	7, 15	mpteq12dv 5045	. . . 4 ⊢ (𝑤 = 𝑊 → (𝑥 ∈ (Base‘(Scalar‘𝑤)) ↦ (𝑥( ·𝑠 ‘𝑤)(1r‘𝑤))) = (𝑥 ∈ 𝐾 ↦ (𝑥 · 1 )))
17		df-ascl 19776	. . . 4 ⊢ algSc = (𝑤 ∈ V ↦ (𝑥 ∈ (Base‘(Scalar‘𝑤)) ↦ (𝑥( ·𝑠 ‘𝑤)(1r‘𝑤))))
18	16, 17, 6	mptfvmpt 6856	. . 3 ⊢ (𝑊 ∈ V → (algSc‘𝑊) = (𝑥 ∈ 𝐾 ↦ (𝑥 · 1 )))
19		fvprc 6531	. . . . 5 ⊢ (¬ 𝑊 ∈ V → (algSc‘𝑊) = ∅)
20		mpt0 6358	. . . . 5 ⊢ (𝑥 ∈ ∅ ↦ (𝑥 · 1 )) = ∅
21	19, 20	syl6eqr 2849	. . . 4 ⊢ (¬ 𝑊 ∈ V → (algSc‘𝑊) = (𝑥 ∈ ∅ ↦ (𝑥 · 1 )))
22		fvprc 6531	. . . . . . . . 9 ⊢ (¬ 𝑊 ∈ V → (Scalar‘𝑊) = ∅)
23	3, 22	syl5eq 2843	. . . . . . . 8 ⊢ (¬ 𝑊 ∈ V → 𝐹 = ∅)
24	23	fveq2d 6542	. . . . . . 7 ⊢ (¬ 𝑊 ∈ V → (Base‘𝐹) = (Base‘∅))
25		base0 16365	. . . . . . 7 ⊢ ∅ = (Base‘∅)
26	24, 25	syl6eqr 2849	. . . . . 6 ⊢ (¬ 𝑊 ∈ V → (Base‘𝐹) = ∅)
27	6, 26	syl5eq 2843	. . . . 5 ⊢ (¬ 𝑊 ∈ V → 𝐾 = ∅)
28	27	mpteq1d 5049	. . . 4 ⊢ (¬ 𝑊 ∈ V → (𝑥 ∈ 𝐾 ↦ (𝑥 · 1 )) = (𝑥 ∈ ∅ ↦ (𝑥 · 1 )))
29	21, 28	eqtr4d 2834	. . 3 ⊢ (¬ 𝑊 ∈ V → (algSc‘𝑊) = (𝑥 ∈ 𝐾 ↦ (𝑥 · 1 )))
30	18, 29	pm2.61i 183	. 2 ⊢ (algSc‘𝑊) = (𝑥 ∈ 𝐾 ↦ (𝑥 · 1 ))
31	1, 30	eqtri 2819	1 ⊢ 𝐴 = (𝑥 ∈ 𝐾 ↦ (𝑥 · 1 ))

Syntax hints:  ¬ wn 3   = wceq 1522   ∈ wcel 2081  Vcvv 3437  ∅c0 4211   ↦ cmpt 5041  ‘cfv 6225  (class class class)co 7016  Basecbs 16312  Scalarcsca 16397   ·_𝑠 cvsca 16398  1_rcur 18941  algSccascl 19773

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1777  ax-4 1791  ax-5 1888  ax-6 1947  ax-7 1992  ax-8 2083  ax-9 2091  ax-10 2112  ax-11 2126  ax-12 2141  ax-13 2344  ax-ext 2769  ax-rep 5081  ax-sep 5094  ax-nul 5101  ax-pow 5157  ax-pr 5221

This theorem depends on definitions:  df-bi 208  df-an 397  df-or 843  df-3an 1082  df-tru 1525  df-ex 1762  df-nf 1766  df-sb 2043  df-mo 2576  df-eu 2612  df-clab 2776  df-cleq 2788  df-clel 2863  df-nfc 2935  df-ne 2985  df-ral 3110  df-rex 3111  df-reu 3112  df-rab 3114  df-v 3439  df-sbc 3707  df-csb 3812  df-dif 3862  df-un 3864  df-in 3866  df-ss 3874  df-nul 4212  df-if 4382  df-sn 4473  df-pr 4475  df-op 4479  df-uni 4746  df-iun 4827  df-br 4963  df-opab 5025  df-mpt 5042  df-id 5348  df-xp 5449  df-rel 5450  df-cnv 5451  df-co 5452  df-dm 5453  df-rn 5454  df-res 5455  df-ima 5456  df-iota 6189  df-fun 6227  df-fn 6228  df-f 6229  df-f1 6230  df-fo 6231  df-f1o 6232  df-fv 6233  df-ov 7019  df-slot 16316  df-base 16318  df-ascl 19776

This theorem is referenced by:  asclval  19797  asclfn  19798  asclf  19799  rnascl  19808  ressascl  19812  asclpropd  19814  rnasclg  38661